The "Te Deum Laudamus" is another familiar hymn. Its origin is doubtful, though it is usually credited to Saint Ambrose. L'Estrange, in his "Alliance of Divine Offices," says: "The Te Deum was made by a bishop of Triers, named Nicetius, or Nicettus, about the year 500, which was almost a century after the death both of Saint Ambrose and Saint Augustine." Bingham, in his "Antiquities of the Church," says: "The Benedictines, who published the works of Saint Ambrose, judge him not to have been the author of it; and Dr. Cave, though at one time he was of a different judgment, and Bishop Stillingfleet, concur in the opinion that the Te Deum was not the composition of Saint Ambrose, or of him and Saint Augustine jointly." Hawkins also says: "The zeal of Saint Ambrose to promote psalm-singing is in nothing more conspicuous than in his endeavors to reduce it into form and method; as a proof whereof, it is said that he, jointly with Saint Augustine, upon occasion of the conversion and baptism of the latter, composed the hymn Te Deum Laudamus, which even now makes a part of the liturgy of our Church, and caused it to be sung in his church at Milan. But this has been discovered to be a mistake. This, however, is certain,--that he instituted that method of singing known by the name of the Cantus Ambrosianus, or Ambrosian Chant, a name, for aught that now appears, not applicable to any determined series of notes, but invented to express in general a method of singing agreeable to some rule given or taught by him." In spite of controversy, however, the Te Deum is still and will always be known as the "Ambrosian Hymn." The original melody is very ancient, but not so old as the hymn itself. It is thoroughly familiar in the Roman Church, though the number of settings for Church use is almost endless. The early composers harmonized it in various forms. It has also borne a conspicuous part on festival occasions. The most celebrated Te Deums of this character, arranged for solos, chorus, organ, and orchestra, are those of Sarti, to commemorate Prince Potemkin's victory at Otchakous; of Graun, to celebrate the battle of Prague; of Berlioz, for two choirs; of Purcell, for St. Cecilia's Day; of Dr. Blow and Dr. Croft, with accompaniments of two violins, two trumpets, and bass; and the magnificent Utrecht and Dettingen Te Deums of Handel. Among those by contemporary writers are Macfarren's, written in 1884, and Sullivan's, commemorating the recovery of the Prince of Wales. The Magnificat, or Song of the Virgin, is part of the vesper service of the Church, and has been treated by all the old Church composers of prominence both in plain chant and in polyphonic form. In the English cathedral service it is often richly harmonized, and Bach, Mozart, Handel, Mendelssohn and others have set it in oratorio style with complete orchestral accompaniment. [1] Born at Florence in the year 1515, and famous as the founder of the Congregation of the Fathers of the Oratory.